116991055 has 8 divisors (see below), whose sum is σ = 144918144. Its totient is φ = 90573600.

The previous prime is 116991029. The next prime is 116991067. The reversal of 116991055 is 550199611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 116991055 - 2⁷ = 116990927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377236 + ... + 377545.

It is an arithmetic number, because the mean of its divisors is an integer number (18114768).

Almost surely, 2^116991055 is an apocalyptic number.

116991055 is a deficient number, since it is larger than the sum of its proper divisors (27927089).

116991055 is an equidigital number, since it uses as much as digits as its factorization.

116991055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754817.

The product of its (nonzero) digits is 12150, while the sum is 37.

The square root of 116991055 is about 10816.2403357174. The cubic root of 116991055 is about 489.0848600154.

The spelling of 116991055 in words is "one hundred sixteen million, nine hundred ninety-one thousand, fifty-five".